[toni]

Here is an hour long video explaining every stage the earth has gone through:

The Whole History of the Earth and Life - https://m.youtube.com/watch?v=SkeNMoDlHUU

It's really mind boggling how many times earth has seen a mass extinction, followed by life appearing again.

[revscat]

As far as I can tell every mass extinction was caused by climate changes.

[dylan604]

But learning if those climate changes can/could be prevented is valuable lessons. If an asteroid impacted caused the changes, preventing an asteroid strike is close to possible now. Super volcano eruption would be much less avoidable. Maybe in a few hundred years someone can look back to see if the mechanization of man made a preventable difference. It just might not be man that is doing the looking.